Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+Light\s+fiber\s+question\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+Light\s+fiber\s+question\s*$/: 13 ]

Total 13 documents matching your query.

1. Topband: Light fiber question (score: 1): Author: "Bruce" <k1fz@myfairpoint.net>; Date: Thu, 24 Oct 2013 08:48:25 -0700; I am now using twisted pair on my receiving Delta antenna and is less noise than the coax. Question: Any one ever tried using light fibers as a near ultimate transmission line from their receiving an; /archives//html/Topband/2013-10/msg00196.html (6,459 bytes)
2. Topband: Light fiber question (score: 1): Author: "Bruce" <k1fz@myfairpoint.net>; Date: Thu, 24 Oct 2013 09:05:47 -0700; Tim, Good information, but I was thinking of a way for "Mr. Average DXer" to get a connection, that is not adding noise, from his on site receiving antenna. 73 Bruce I think that is called "a remote; /archives//html/Topband/2013-10/msg00198.html (8,095 bytes)
3. Re: Topband: Light fiber question (score: 1): Author: "Shoppa, Tim" <tshoppa@wmata.com>; Date: Thu, 24 Oct 2013 13:29:04 +0000; I do not know of any analog optical coupling technology that has nearly the dynamic range of copper. 50dB is considered quite good HF dynamic range for completely sealed analog optocouplers. Start pu; /archives//html/Topband/2013-10/msg00199.html (8,257 bytes)
4. Re: Topband: Light fiber question (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 24 Oct 2013 11:28:45 -0400; People forget, or don't know, fiber cables require modulators and demodulators. The modulators and demodulators are not simple, and have horrible dynamic range compared to a simple piece of coax. I c; /archives//html/Topband/2013-10/msg00203.html (10,920 bytes)
5. Re: Topband: Light fiber question (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 24 Oct 2013 11:31:10 -0400; I am now using twisted pair on my receiving Delta antenna and is less noise than the coax. If you now have less noise with a twisted pair, it only means you had a significant design or installation i; /archives//html/Topband/2013-10/msg00204.html (7,175 bytes)
6. Re: Topband: Light fiber question (score: 1): Author: Bill Wichers <billw@waveform.net>; Date: Thu, 24 Oct 2013 16:10:01 +0000; Um, no... Not really -- you do NOT need modulators and demodulators to use fiber for *analog* applications. If you want to run your signal over a commercial transport network you will (to digitize th; /archives//html/Topband/2013-10/msg00205.html (10,225 bytes)
7. Re: Topband: Light fiber question (score: 1): Author: "Shoppa, Tim" <tshoppa@wmata.com>; Date: Thu, 24 Oct 2013 16:36:44 +0000; CATV analog modulation video over fiber has a typical 50dB dynamic range. See e.g. http://www.emcore.com/wp-content/uploads/Medallion-6000-Series.pdf Tim N3QE Um, no... Not really -- you do NOT need; /archives//html/Topband/2013-10/msg00207.html (10,164 bytes)
8. Re: Topband: Light fiber question (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 24 Oct 2013 13:06:50 -0400; -- Original Message -- From: "Bill Wichers" <billw@waveform.net> To: "Tom W8JI" <w8ji@w8ji.com>; "Shoppa, Tim" <tshoppa@wmata.com>; "Bruce" <k1fz@myfairpoint.net>; <topband@contesting.com> Sent: Thur; /archives//html/Topband/2013-10/msg00208.html (9,778 bytes)
9. Re: Topband: Light fiber question (score: 1): Author: Bill Wichers <billw@waveform.net>; Date: Thu, 24 Oct 2013 17:39:00 +0000; I see your point, since the signal is undergoing a conversion. My thinking was modulator = baseband to some kind of RF or digital signal, i.e. something very different from the original signal in ter; /archives//html/Topband/2013-10/msg00209.html (8,900 bytes)
10. Re: Topband: Light fiber question (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 24 Oct 2013 14:44:32 -0400; I see your point, since the signal is undergoing a conversion. My thinking was modulator = baseband to some kind of RF or digital signal, i.e. something very different from the original signal in ter; /archives//html/Topband/2013-10/msg00210.html (9,460 bytes)
11. Re: Topband: Light fiber question (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Thu, 24 Oct 2013 15:14:16 -0400; BTW, Bill, amplitude modulation and "mixing" are the same process mathematically. In a "mixer" we just select one of the "sidebands" -depending on whether we are doing "up-conversion" or "down-conver; /archives//html/Topband/2013-10/msg00211.html (10,440 bytes)
12. Topband: Light fiber question (score: 1): Author: "Bruce" <k1fz@myfairpoint.net>; Date: Thu, 24 Oct 2013 16:01:28 -0700; "People forget, or don't know, fiber cables require modulators and demodulators. The modulators and demodulators are not simple, and have horrible dynamic range compared to a simple piece of coax."; /archives//html/Topband/2013-10/msg00212.html (8,931 bytes)
13. Re: Topband: Light fiber question (score: 1): Author: "John Kaufmann" <jkaufmann@alum.mit.edu>; Date: Thu, 24 Oct 2013 21:36:47 -0400; There are niche applications, called "antenna remoting", where photonic and fiberoptic technologies are used to transmit RF signals from an antenna to a remote receiver. You can buy commercial system; /archives//html/Topband/2013-10/msg00226.html (8,701 bytes)

Current List: 1 - 13
Page: [1]